V. Nair et al., 1,3-DIPOLAR CYCLOADDITION OF NITRILE-N-OXIDES WITH S,5-DI-TERT-BUTYL-1,2-BENZOQUINONE - FACILE FORMATION OF SPIRO-1,3-DIOXAZOLES, Tetrahedron letters, 37(31), 1996, pp. 5623-5626
An efficient synthesis of novel spiro-dioxazole systems by the 1,3-dip
olar cycloaddition reactions of 3,5-di-fert-bulyl-1,2-benzoquinone wit
h aryl nitrile oxides is described. Copyright (C) 1996 Elsevier Scienc
e Ltd